Rotary pump.



No. 878,000. PATBNTED FEB. 11, 1908.

11. BERRBNBBRG. [RUTARY PUMP.

AYPLICA'T-ION :FILED MAR.27. 1907.

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PATBNTBD PEB. 11, 1908.

R. BERRENBERG.V

ROTARY PUMP. APPLIGATION FILED MAR127.1907.

4 SHEETS-1mm 2.

WITNEEEEIE- MMM INJEN/Tc- PATENTBD PEB. '11, 1908.

R. BERRENBERG..

ROTARY PUMP.

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- l'wplm l i REINOLD BERRENBERG, OF BOSTON, MASSACHUSETTS.

ROTARY PUMP.

Specification of Letters Patent.

Patented Feb. 1,1, 1908.

Application led March 27. 1907. Serial No. 364.914.

.To all whom it may concern:

Be it known that I, REINoLD BERREN- BERG, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Rotary Pumps, of which the following, taken in connection with the accompanying drawings, is a speciiication.

My invention relates to the peculiar internal construction of the pump, by means of which I am enabled to dispense with sliding pistons, and thereby produce a pump that has but few parts, and one that is very solid and durable. The construction and operation of my invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of my pump; Fig. 2 is a view showing parts in horizontal section, taken on line 2-2 of Fig. '7, also showing a part in full, of the rotating piston, and one form of the valve. Fig. 3 is a horizontal section of the body part of the pump, showing the base, shaft and fly wheel. Fig. 4 is a vertical cross section, taken on line 4 4 of Fig. 3, showing the interior of the casing, omitting the piston, and showing the end of the valve in full. Fig. 5 is a view in elevation, showing the piston and` the main shaft. Fig. 6 is a plain view of the sliding valve` Fig. 7 is aview of the interior of the pump, showing the piston all in elevation.

The peculiar and dominant feature of my pump is the rotating piston, shown in full in Fig. 5; this, it will be noticed, has a cylindrical surface and end surfaces which consist of annular warped surfaces and disk surfaces; that is, referring to Figs. 4 t 5, the surface Pf, is cylindrical, the annular end surfaces P2, P2, are warped, and the end surfaces P3, P3, are circular disks, as shown. The parts of the rotating piston P that I have i referred to as disks, are the ends of the central part P1 (see Fig. 3) of the piston, and are closely fitted to the interior faces of the bosses O1 and E1that are made on the ends O and E of the casing. The rotating Ypiston P is keyed or otherwise made fast to the main shaft D, upon which is mounted the ily wheel D1. l

, The casing of my pump consists of a cylindrical part B mounted upon standards A1 A1, which form a part of the base A.

The valve V is a metal plate adapted to slide longitudinally or parallel with the axis; it is guided in ways K1 K1, Fig. 4, and by grooves O3 made in the bosses O1 and E1 of the end pieces O and E. This valve V is recessed as shown in Fig. 6 and is adapted to t the rotating piston P and is made to slide longitudinally by the rotation of the. piston P. This pump is of the duplex order, having a piston chamber upon each side of the piston, and having two inlet ports I and I1 and two outlet ports O and O1, the inlet ports being below the valve V, and the outlet ports above the same, so that asthe piston rotates the piston chambers of the inlet ports l and 11 is always increasing in capacity with slight interruption, and the piston chambers or pockets in connection with the outlet ports O and O1 are always growing smaller with the same slight interruption, therefore when the piston rotates there is practically a constant stream of liquid flowing to and from the pump. l

The valve chamber, shown in Figs. 1, and 2, has end pieces, K, K, and an outside plate L. The ways, in which the valve slides, are indicated by K1 K1 Fig. 4.

The valve V, as shown in Fig. 2, is slightly different from that shown in Figs. 4 and 7, viz., it is slightly narrower, and isl provided with anti-friction rolls R R R, otherwise it is exactly like the valve V shown in the other drawings.

Claim A rotary pump comprising a casing having suitable inlet and outlet ports and having on the inner ends of the casing inwardly projecting bosses, the said bosses being grooved, whereby ways or guides are provided for the valve to slide in; a rotating piston, the central part of which is disk shaped and constructed to fit the faces of the said bosses and thereby form a comparatively water-tight joint, the outer part of said piston being an annular sinuous ring, the peripheral surface of which iits the inner cylindrical surface of the casing and a sliding Valve constructed to be operated by said tWo subscribing Witnesses, on this 18th day piston and to oo-aot with the same to force of March, A. D. 1906.

the contents of the piston chambers into the outlet ports, substantially as and for the RENOLD BERRENBERG' 5 purpose set forth. Witnesses:

In testimony whereof, I have signed my FRANK G. PARKER,

name to this speeoaton in the presence of JOHN BUGKLER. 

